[Webkit-unassigned] [Bug 253070] New: Fix alignToClosestEdge semantics in RenderLayer::getRectToExpose

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=253070

            Bug ID: 253070
           Summary: Fix alignToClosestEdge semantics in
                    RenderLayer::getRectToExpose
           Product: WebKit
           Version: Safari Technology Preview
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Scrolling
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ahmad.saleem792 at gmail.com
                CC: simon.fraser at apple.com

Created attachment 465218

  --> https://bugs.webkit.org/attachment.cgi?id=465218&action=review

Patch GitHub Desktop Screenshot

Hi Team,

While going through Blink's commit, I came across another where we are failing tests but Chrome Canary 113 is passing them while Firefox Nightly 112 is matching Safari Technology Preview 164.

Test case - https://jsfiddle.net/tzj4kq28/show

Blink Commit - https://chromium.googlesource.com/chromium/blink/+/ae8d18613905f501a3ce9ba83193fe77e920afbf

WebKit Source - https://searchfox.org/wubkat/source/Source/WebCore/platform/ScrollableArea.cpp#857 & https://searchfox.org/wubkat/source/Source/WebCore/platform/ScrollableArea.cpp#899

I have done local merge of this patch but it does not lead to pass on this testcase but it would be good to track and get input whether this is legit bug in WebKit or not.

Just raising for tracking.

Thanks!

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